Lebosrjret



(No Model.) 2 Sheets-Sheet. 1.

L. B. VILLEBONNET. v

' ROTARY PUMP AND VENTILATOR.

Patented J'u1y'10, 1883.

n. PETERS. PmiwLitl-mgnphor. Wampum D.c.

2 Sheets-Sheet 2.

Patented July-10, 1883.

L B VILLEBONNET ROTARY PUMP AND VENTILATOR.

(N0 Modefi.)

Wifizwd h. FUCHS. Photo-Lutbogpphen Washington D. c.

Y UNI-T D (STATES PATENT Orricn.

LUCIE N- BAUZILE'VILLEBONNET, OF NANCY, FRANCE.

ROTARY PuM P AND VENT-IL'ATO R.

SPECIFICATION forming part of Letters Patent No. 281,165, dated July 10, 1883.

Application filed December 31. 1881. (No model.) Patented in France July 4, 1881. No. 143,730, and in England October 22, l 1881, No.4,fi37.

To all whom it may concern.-

Be it known that I, 'LL'oiEN BAUZiLE ,VI LEBONNET, a citizen of the Republic of France, residing at Nancy, Department of Meurthe and Moselle, in France, officer of engineering,

have invented new and useful Improvements in Rotary Pumps and Ventilators, (for which I have obtained a patent in France, No. 143, 7 30, bearing date July 4, 1881, and provisional protection in Great Britain, No. 4,637, bearing date October 22, 1881,) of which the following is a specification.

The invention, which is applicable as a pump or a ventilator, comprehends a cylinder inolosing two wings that operate as pistons, the one moving to draw in the fluid by creating a partial vacuum and expelling the fluid previously drawn in, while the other is practically stationary, and forming a partition between the inlet and outlet passages of the pump, a differential movement being imparted to each of said wings by means of levers and links from any suitableprime motor, all as hereinafter more fully described, and specifically pointed out in the claims.

In the accompanying two sheets of drawings, Figure 1 is a vertical longitudinal section, Fig. 2 is an end elevation, and Fig. 3 is a vertical transverse section, of a pump constructed according to my invention, the latter figure showing in elevation the arrangement of levers and links whereby a differential rotary motion is imparted to the piston-wings. Figs. 4, 5, and 6 are detail views of the pistonwings.

Like letters of reference indicate like parts in the above figures of drawings.

0 indicates the pump-cylinder, provided with the fluid-inlet Y and fluid-outlet Z, as shown by the drawings. The inlet and outlet passages are located upon one-third of the periphery of the cylinder, or practically so. The cylinder is mounted upon a shaft, 1, that carries two piston-wings, 2 and 3. The former of these is mounted loosely and the latter is mounted rigidly upon the shaft in any convenient manner. As shown in Fig. 1, the wing 53 is formed upon a sleeve, S, of such a length within the cylinder as to occupy one half of hereinafter described.

the length of the shaft 1, said sleeve extending outside of the cylinder a sufficient distance to connect it with the opera-ting mechanism, as The wing 3 is likewise formed on a sleeve, S, of such a length as to occupy the other half of the length of the shaft within the cylinder, to which shaft said sleeve S is keyed, as shown in said Fig. 1, or to which it is rigidly connected by means of bolts or screws, as shown by dotted lines in Fig. 4, or by means of radial arms a, as shown in Fig. I 6. The wing 2 may, if desired, be connected to a short sleeve, s, having radial arms a, as shown in said Fig. 6. In either construction the wings 2 and 3 extend the full length of the cylinder, one-half of each wing extending over and rotating upon the bearing or carrying sleeve of the other wing, as plainly 7 shown in Figs. 1, 4, 5, and 6.

As hereinbefore mentioned, a differential rotary movement is imparted to the wings upon and with the shaft 1 by means of the following mechanism: The sleeve S of the wing 2, that is loosely mounted upon shaft 1, is rigidly connected to a short arm or crank, 6, and to the shaft 1, upon which the wing 3 is rigidly mounted, is keyed a second short arm or crank, 7. The free ends of the crank-arms 6 and 7 are respectively pivoted to the inner ends of two long links, 8 and 9, the outer ends of which long links are pivoted upon the eccentricwrist pin 5 of a wheel, XV, as shown in Figs. 1 and 2. Rotary motion is imparted to said links and crank arms through the wheel W from an auxiliary short shaft, 4, which latter is mounted in independent bearings not in the same plane as shaft 1-that is to say, shaft 4 has its axis of rotation eccentric to that of shaft 1, to which motion may be imparted from any suitable prime motor, or by hand through the medium of a crank, 13. Instead of the wheel W, the rods 8 and 9 may be pivoted to a crank-rod, 5, secured to shaft 4, as will be readily understood.

The operation of the rotary pump is as follows, referring more particularly to Fig. 3: Motion being imparted to shaft 4 in the direc tion of the arrows at x, the crank-r0615 or the wheel W will impart a like motion to the links 8 and 9. These links in their turn comto the plane of rotation of the driven shaft and its sleeve S, it will be readily understood that the speed of the shaft or the sleeve becomes much slower as the outer ends'of the arms 6 or 7 pass through that portion of the circle (in which said outer ends rotate) nearest to the driving-shaft, while the speed of the shaft or the sleeve is materially increasedwhile theouter end of their (lriving-crank-1)asses through that portion of the arc farthest from said driving-shaft. The shaft 1 and sleeve S are therefore rotated at a differential speed, one rotating slowly, .while the other rotates rapidly. The relative speed is such or approximately such that one wing will travel over two-thirds of the circumference of the casing while the other is traveling over onethird thereof. I11 this manner the wing 2 is made to form a partition between the inlet and outlet passages Y and Z, while the wing 3 car ries the fluid in front of it to the outlet-pas sage, and by creating a partial vacuum behind it draws fresh fluid through the inlet-passage. This position of the wings is reversed at each half-revolution of the shaft 4Lthat is to say, when the'wrist-pin 5 has made one-half of a revolution and reached the point 14, orthereabout, the position of the links and wings will be reversed, and the wing 2 will move rapidly,

while the wing 3 will move slowly.

' a maintaining-wheel, 7Q Said wheel is mounted upon a hub. 72,

In practice I preferably employ what I term (Shown in Fig.

formed upon one of the cylinder-heads, and is connected to the wheel W by the wrist-pin 5 and by means of bolts. The object of employing a second wheel, W, is to obtain a'greater uniformity of motion of the links'and arms, and consequently of the driven sh aft and sleeve S and their piston-wings, said wheel acting as or performing the function of a fly-wheel. 'Having now fully described my invention, what I claim is 1. The combination, with the cylinder-shaft 1, of the wing 2, loosely mounted thereon, and the wing 3, rigidly connected therewith, of the arms 6 and 7 and links 8 and 9, connected together as described, and means to rotate the same, substantially as and for the purpose specified. v

2. The combination, with. the shaft 1, wing 2, arms 6 and 7, links 8 and 9, and the wheel WV, of the maintaining or flywheel Wt, sub stantially as and for the purpose specified.

In testimony that I claim the foregoing I have hereunto set my hand this 24th day of September, 1881.

LUCIEN BAUZILE VILLEBONNE'I.

WVitnesses:

ROBT. M. HOOPER, AD. Bon'rronnn. 

